I just did the latest V-Ray (for SketchUp) update to 7.30. Now when I render in interactive mode, the rendered image appears very smudgy right from the beginning. Previously it would appear pixelated for several seconds before it would apply the denoiser. I prefer the previous strategy. Why denoise before you have enough detail? How can I revert to the previous strategy?
Thanks,
Mike
I have experienced the same thing. It eventually cleans up but I agree about the denoise being too early.
Hi,
This is the setting that enables the “early” / Light cache denoising.
You can disable it if you prefer the old behavior.
Konstantin
You know there is a slider that contains some options for denoiser.. Rapid, very often,often, rarely and at the end..
Edit; Somethimes i forget i am using vray 6.. 
This seems to have fixed it. Thanks!